ngx.header["Access-Control-Allow-Origin"]="*"
ngx.header["Access-Control-Allow-Headers"]="DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range, userid, agent, brandid, language, token"
if ngx.var.request_method=="OPTIONS" then
    ngx.header["Access-Control-Max-Age"]="1728000"
    ngx.header["Access-Control-Allow-Methods"]="GET, POST, OPTIONS, PUT, DELETE"
    ngx.header["Content-Length"]="0"
    ngx.header["Content-Type"]="text/plain, charset=utf-8"
end

